01 - In a large bowl, combine ground turkey, onion, garlic, parsley, Worcestershire sauce, mustard, smoked paprika, salt, and black pepper. Mix until just combined without overmixing.
02 - Divide the mixture into 4 equal portions and shape each into a patty about 1/2 inch thick.
03 - Heat olive oil in a large skillet or grill pan over medium heat. Cook patties for 5 to 6 minutes per side until fully cooked through (internal temperature 165°F).
04 - During the last minute of cooking, place a slice of cheddar cheese on each patty and cover with a lid to melt.
05 - If desired, lightly toast the burger buns before assembly.
06 - Spread mayonnaise or preferred sauce on bottom bun. Layer with lettuce, tomato slices, turkey patty with melted cheese, red onion, and pickles. Top with the bun.
07 - Serve the assembled burgers immediately with your preferred sides.